Which of these will cause a diffuse reflection?

Fibre boundary of an organic material

Which of these is not a law of reflection?

The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.

The reflected ray and the incident ray are on the thesame sides of the normal.

The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.

The reflected ray and the incident ray are on the opposite sides of the normal.

Do You Know About Light And Reflection? Quiz

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Quizzes Created: 1463 | Total Attempts: 763,199

Questions: 10 | Attempts: 184 | Updated: Mar 19, 2023

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Do You Know About Light And Reflection? Quiz - Quiz

Light is a form of energy usually in the form of electromagnetic radiation that travels by way of waves within a specific portion of the electromagnetic spectrum. Reflection generally is when a traveling wave bends toward another direction because of its contact with a shiny or reflective surface. Try to ace this quiz.

Questions and Answers

1.

How many types of light reflection are there?
- A.
  
  2
- B.
  
  5
- C.
  
  3
- D.
  
  6
Correct Answer
A. 2

Explanation
There are two types of light reflection.

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2.

Which of these will determine the type of reflection to happen?
- A.
  
  Ray of Light Angle
- B.
  
  Distance
- C.
  
  Speed
- D.
  
  Material type
Correct Answer
D. Material type

Explanation
The type of reflection that occurs is determined by the material type. Different materials have different properties that affect how light is reflected off their surfaces. For example, a smooth and polished surface will produce a regular reflection, while a rough surface will produce a diffuse reflection. The material's composition, texture, and surface finish all play a role in determining the type of reflection that occurs.

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3.

What is the reflection on a shiny material called?
- A.
  
  Specular
- B.
  
  Diffuse
- C.
  
  Rational
- D.
  
  Straight line
Correct Answer
A. Specular

Explanation
The reflection on a shiny material is called "specular." Specular reflection refers to the mirror-like reflection of light off a smooth surface, such as a polished metal or glass. It results in a clear and focused reflection, where the angle of incidence equals the angle of reflection. This type of reflection is different from diffuse reflection, which occurs when light is scattered in different directions off a rough or matte surface. Rational and straight line are not terms related to the reflection on shiny materials.

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4.

What is the type of reflection that occurs on a dull and/or rough surface?
- A.
  
  Specula
- B.
  
  Diffuse
- C.
  
  Rational
- D.
  
  Acute line
Correct Answer
B. Diffuse

Explanation
Diffuse reflection occurs on a dull and/or rough surface. Unlike specula reflection, which occurs on smooth and shiny surfaces, diffuse reflection happens when light rays hit an uneven surface and scatter in different directions. This type of reflection results in a loss of intensity and creates a softer, less focused reflection.

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5.

Which of these will cause a diffuse reflection?
- A.
  
  Water surface
- B.
  
  Mirror
- C.
  
  Glossy surface
- D.
  
  Fibre boundary of an organic material
Correct Answer
D. Fibre boundary of an organic material

Explanation
Fibre boundary of an organic material will cause a diffuse reflection because organic materials have irregular surfaces that scatter light in different directions, resulting in a diffuse reflection.

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6.

Which of these is a model of diffuse reflection?
- A.
  
  Artinian Luminance
- B.
  
  Lambertian Reflectance
- C.
  
  Eistein Luminance
- D.
  
  Thompson's Reflectance
Correct Answer
B. Lambertian Reflectance

Explanation
Lambertian Reflectance is a model of diffuse reflection. Diffuse reflection occurs when light is scattered in many different directions upon striking a rough or textured surface. Lambertian Reflectance specifically refers to a surface that reflects light uniformly in all directions, regardless of the angle of incidence. This model is commonly used in computer graphics and computer vision to simulate the behavior of light on different surfaces.

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7.

Which type of reflection enables us to see object?
- A.
  
  Specular
- B.
  
  Diffuse
- C.
  
  Straight line
- D.
  
  Rational
Correct Answer
B. Diffuse

Explanation
Diffuse reflection enables us to see objects. When light hits a rough or uneven surface, it scatters in different directions, allowing us to perceive the object. This type of reflection occurs when the surface is not smooth enough to reflect light in a single direction, resulting in a blurred or scattered reflection. Specular reflection, on the other hand, occurs when light reflects off a smooth surface, like a mirror, creating a clear and focused reflection. Straight line and rational are not types of reflection and do not relate to the ability to see objects.

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8.

Which of these reflections forms images?
- A.
  
  Specular
- B.
  
  Diffuse
- C.
  
  Rational
- D.
  
  Straight line
Correct Answer
A. Specular

Explanation
Specular reflections form images because they involve the reflection of light rays in a single direction, resulting in a clear and focused image. These reflections occur when light hits a smooth and shiny surface, such as a mirror or a polished metal, and bounces off at the same angle as it arrived. The reflected light rays maintain their coherence and create a distinct image of the object being reflected. On the other hand, diffuse reflections occur when light is scattered in various directions by a rough or textured surface, resulting in a blurred or scattered image.

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9.

$When light reflects off a material denser (with higher refractive index) than the external medium, it undergoes which of these? - ProProfs$

When light reflects off a material denser (with higher refractive index) than the external medium, it undergoes which of these?
- A.
  
  Phase refraction
- B.
  
  Diffuse reflection
- C.
  
  Phase inversion
- D.
  
  Retroflection
Correct Answer
C. Phase inversion

Explanation
When light reflects off a material denser than the external medium, it undergoes phase inversion. This means that the light wave undergoes a 180-degree phase shift upon reflection. This occurs because the denser material causes the light wave to slow down, changing its wavelength and phase. As a result, the reflected light wave is flipped in phase compared to the incident light wave.

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10.

Which of these is not a law of reflection?
- A.
  
  The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.
- B.
  
  The reflected ray and the incident ray are on the thesame sides of the normal.
- C.
  
  The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.
- D.
  
  The reflected ray and the incident ray are on the opposite sides of the normal.
Correct Answer
A. The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.

Explanation
The correct answer is "The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane." This statement is not a law of reflection because it does not accurately describe the behavior of light during reflection. The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of reflection all lie in the same plane.

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